Oakland County Sheriff's Department Major Robert Smith said the shooting occurred at 12:30 p.m. Tuesday in the gun range at Accurate Firearms, 6547 Dixie Highway in Independence Township, a community just south of Clarkston and about 40 miles north of Detroit.

Smith said his office hasn't received official word on the cause from the Medical Examiner's Office and sent homicide detectives to investigate the incident.

"A female came in, purchased some ammo and was firing at the range," Smith said. "She was firing and they didn't hear anything for a while and when they went to check on her, she was there with a head wound."

Smith said there is surveillance footage at the range. He hadn't viewed it himself and did not know if detectives had.

He was uncertain whether the woman brought her own gun to the range or was using one provided by the business.

An autopsy is scheduled for Wednesday morning and the victim's identity is not being released at this time.

MLive Detroit could not reach a representatives for the gun range and firearms store Tuesday afternoon. A clerk said she would pass along MLive's request for comment.

A customer, who asked not to be named, told MLive he was shopping for a handgun in the retail section of the business and having difficulty choosing between two models when the store operator recommended that he go to the firing range and test them both.

The Clarkston resident said he began walking toward the firing range, about 200 feet away, and noticed several Oakland County sheriff's deputies.

"Out came a body bag," the customer said. "I went to go into the range and the guy said, 'We're going to be closed for about an hour.'"

The customer was told he'd have to return once deputies cleared the scene for the jacket he'd left inside.